CVE Explorer

CVE-2026-63263

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:586f8b145279c1a02c89a7173ce80e48e7e1310bf231c9d86adc814be10186aa

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Elasticsearch","vendor":"Elastic","versions":[{"lessThanOrEqual":"9.4.3","status":"affected","version":"9.4.0","versionType":"semver"},{"lessThanOrEqual":"9.3.7","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThanOrEqual":"8.19.18","status":"affected","version":"8.0.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:5d039a57fb05a47b65aac03364e77b26e7975b0080ff4cd016c2a6710a9500a4 · sha256:83e26f7e394651f5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:5d039a57fb05a47b65aac03364e77b26e7975b0080ff4cd016c2a6710a9500a4 · sha256:83e26f7e394651f5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5d039a57fb05a47b65aac03364e77b26e7975b0080ff4cd016c2a6710a9500a4 · sha256:83e26f7e394651f5… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5d039a57fb05a47b65aac03364e77b26e7975b0080ff4cd016c2a6710a9500a4 · sha256:83e26f7e394651f5… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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